Wind-vibration-resistant icing-resistant high-strength overhead insulated cable

Abstract

The invention discloses a wind-vibration-resistant ice-coating-resistant high-strength overhead insulated cable, and relates to the technical field of overhead insulated cables, a middle-limit heat-conducting insulating pipe is arranged on the outer side of an inner conductive core, a plurality of coupling buffer sleeves are bonded to the inner side of the middle-limit heat-conducting insulating pipe at equal intervals, and the inner sides of the coupling buffer sleeves are sleeved with convex opposite-insertion clamping frames; the outer side of the inner conductive core is provided with an outer convex opposite-insertion card position frame, one end of the outer convex opposite-insertion card position frame is welded with a card insertion fixing rod, the outer side of the inner conductive core is paved with an attaching semi-conductive sheet, and the outer side end of the attaching semi-conductive sheet is provided with a pressing opposite processing sheet. The swing amplitude of the cable is reduced, so that the aging and fatigue speed of the cable is reduced, the use safety and the service life of the cable are improved, and the bearing capacity of the cable in an ice and snow environment is improved through internal support reinforcement.

Description

Technical Field

[0001] This invention relates to the field of overhead insulated cable technology, specifically to a high-strength overhead insulated cable that is resistant to wind vibration and icing. Background Technology

[0002] Overhead insulated cables refer to overhead conductors with an insulation layer. By adding an insulation material to the outside of the metal conductor, the advantages of low construction cost and convenient construction of overhead lines are retained, while offering higher power supply reliability, better safety, space saving, convenient maintenance, and good economic benefits.

[0003] However, existing overhead insulated cables, when affected by wind, lack effective buffer components and mostly rely on connection points for buffering. This results in significant vibrations under the influence of wind and the cable's own weight. Furthermore, even in a light breeze, small-amplitude resonant vibrations can easily occur, leading to accelerated aging and fatigue of the cable material, thus affecting the safety and service life of the cable. Summary of the Invention

[0004] This invention provides a high-strength overhead insulated cable resistant to wind vibration and icing, which can effectively solve the problem mentioned in the background art that existing overhead insulated cables, when affected by wind, do not have effective buffer components and mostly rely on connection points for buffering. This results in large-amplitude vibrations under the influence of wind force and the cable's own weight, and even in light winds, small-amplitude resonant vibrations are prone to occur, leading to accelerated aging and fatigue of the cable material, affecting the safety and service life of the cable.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-strength overhead insulated cable resistant to wind vibration and icing, comprising an inner conductive core, wherein a multi-level buffer limiting component is provided on the outer side of the inner conductive core; The multi-level buffer limiting assembly includes a middle limit thermally conductive insulating tube; A middle-limit thermally conductive insulating tube is provided on the outer side of the inner conductive core, and several interlocking buffer sleeves are equidistantly bonded to the inner side of the middle-limit thermally conductive insulating tube. The inner side of the connecting buffer sleeve is fitted with an outwardly protruding interlocking bracket, and one end of the outwardly protruding interlocking bracket is welded with an insert fixing rod. A bonding semiconductive sheet is laid on the outer side of the inner conductive core, and a pressing treatment sheet is installed on the outer end of the bonding semiconductive sheet. An inner support fixing plate is inserted and installed inside the pressing and processing plate, and an outer heat-conducting plate is laid on the outer end of the pressing and processing plate. The outer end of the external heat-conducting sheet is bonded with a multi-groove flow-guiding support strip, and fixed arc guide plates are symmetrically inserted and installed on the inner side of the multi-groove flow-guiding support strip. The side end of the multi-groove flow guide support bar is snapped with a double convex pressure bar, and the outer side of the double convex pressure bar is snapped with a pressure relief limiting plate.

[0006] According to the above technical solution, a convex locking plate is bonded to the outer end of the pressure relief limiting plate, and a supporting limiting rib is embedded at equal intervals on the inner side of the convex locking plate. A double-connected heat-conducting plate is snapped between two adjacent convex locking plates, and a card fixing hole is opened at one end of the outward convex interlocking locking frame. The cross-section of the protruding interlocking bracket is U-shaped, and two adjacent protruding interlocking brackets are interlocked and connected.

[0007] According to the above technical solution, a combined connection hole is provided at one end of the pressing and processing piece corresponding to the position of the inner support fixing plate; A double-connected external conductor uniform frame is installed on the outer end of the middle-limit thermally conductive insulating tube, and a bidirectional exchange frame is installed on the outer end of the middle-limit thermally conductive insulating tube at the position corresponding to the double-connected external conductor uniform frame. An inner limiting insulation tube is installed on the outer end of the bidirectional exchange rack. The outer end of the protruding interlocking bracket is attached to the inner end of the middle-limit thermally conductive insulating tube, and the longitudinal section of the fixed-arc guide plate is arc-shaped.

[0008] According to the above technical solution, one end of the inner side of the double convex pressing strip is slidably attached to the outer side of the outer heat-conducting sheet, and the longitudinal section of both the double convex pressing strip and the convex positioning plate is cross-shaped.

[0009] According to the above technical solution, the longitudinal section of the double-connected heat-conducting plate is I-shaped, and one end of the double-connected external heat-conducting uniform frame is attached to one end of the bidirectional exchange frame.

[0010] According to the above technical solution, the inner end of the bidirectional exchange frame is attached to the outer end of the middle limit thermally conductive insulating tube, and the inner end of the double-connected outer conductor uniform frame is attached to the outer end of the middle limit thermally conductive insulating tube.

[0011] According to the above technical solution, a connecting assembly is provided on the side end of the inner limiting insulating tube; The assembly includes a constant pressure limiting groove; The outer side of the inner limiting insulating tube is provided with several constant pressure limiting slots at equal intervals, and a double convex ring bracket is inserted and installed inside the constant pressure limiting slot; The outer end of the double convex ring bracket is fitted with an outer sheath tube, and the outer end of the outer sheath tube is provided with several drainage treatment grooves at equal intervals. The outer sheath tube has several protective isolation films bonded at equal intervals on its outer end, and the inner insulating tube has metal shielding strips wound at equal intervals on its inner side. The inner side of the metal shielding strip is provided with several pressure-reducing airbags, and the inner side of the pressure-reducing airbags is provided with several fine-adjusting spring plates at equal intervals. A fine-tuning airbag is bonded between the double-connected external guide uniform frame and the bidirectional exchange frame, and a pressing linkage bracket is sleeved on the side end of the protective isolation membrane. One end of each of the two clamping linkage brackets is inserted with a combination bolt, and one end of the combination bolt is connected with a combination nut via a thread; The side end of the clamping linkage bracket is equidistantly fitted with several inner sliding limit cylinders, and the inner side of each inner sliding limit cylinder is fitted with a damping buffer.

[0012] According to the above technical solution, one end of the damping buffer is snapped with an internal thread correction block, and one end of the internal thread correction block is connected to a load-bearing cable via a thread. A middle limit fixing rod is installed between multiple of the aforementioned double-connected external guide uniform frames and bidirectional exchange frames; The inner end of the depressurization airbag is attached to the outer end of the double-connected outer guide uniform frame, and the inner end of the depressurization airbag is attached to the outer end of the bidirectional exchange frame.

[0013] According to the above technical solution, the two clamping linkage brackets are fitted together at their side ends, and the combined nut is inserted and installed at one end of the inner side of the clamping linkage bracket.

[0014] According to the above technical solution, the internal thread correction block is slidably installed inside the inner sliding limit cylinder, and the middle limit fixing rod is placed inside the outer sheath tube.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. It is equipped with a multi-level buffer limit component. The pressure relief airbag, the fine adjustment spring plate and the fine adjustment airbag squeeze and limit the double-connected outer conductor uniform frame, the bidirectional exchange frame, the middle limit thermal insulation tube and the inner limit insulation tube. With the reciprocating swing buffer treatment of the outward convex interlocking positioning frame and the matching buffer sleeve, it can realize small-amplitude limit and buffer operation of multiple sets of cells in different positions inside. The outward convex interlocking positioning frame and the convex positioning plate push the pressure relief limiting plate, and the pressure relief limiting plate pushes the double convex pressure strip to squeeze and limit the multi-slot flow guide support strip. The multi-segment fine adjustment movement compression and telescopic elastic reset are combined with the internal multi-position rotation energy absorption buffer to avoid fixed frequency oscillation and reduce material aging and fatigue damage. The airflow is guided by irregular flow-guiding grooves and the outer side of the near-circular outer sheath, causing the airflow to flow to the upper and lower sides of the cable and forming irregular turbulence. The turbulence counteracts the subsequent airflow, slowing down the airflow velocity and reducing the cable's sway amplitude. The inner conductive core is pressed and positioned by the pressing treatment plate and the inner support fixing plate. The middle part is isolated, limited, and supported by the external multi-segment anti-convex positioning plate, support limiting ribs, and double-connected heat-conducting plate. The outer side is pressed and limited by the external multi-segment pressure-relieving airbag, fine-tuning airbag, double-connected outer conductor uniform frame, and bidirectional exchange frame. The three-part segmented pressing treatment achieves stable support and positioning of the cable at different positions, improving the cable's support stability and tensile strength, ensuring that the cable can bear weight steadily when icing, and avoiding damage to internal components due to excessive bending. By employing multi-stage energy absorption and buffering from the outside in, combined with airflow guidance and interference mitigation, and internal pressure-resistant support, this technology effectively solves the problem of existing technologies that lack effective buffer components and rely on connection points for buffering. This results in significant cable oscillations and resonance under the influence of wind and weight. By utilizing internal oscillations of varying intensity and direction at multiple locations for energy absorption and reset buffering, along with external small-amplitude oscillations and airflow guidance, the amplitude of cable oscillations is reduced. This slows down cable aging and fatigue, improving cable safety and service life. Simultaneously, internal reinforcement enhances the cable's load-bearing capacity in icy and snowy environments.

[0016] 2. Equipped with a connecting assembly, the internal heat is transferred to the double-connected external heat-dissipating frame and bidirectional exchange frame via a pressure-adjusting treatment plate, an external heat-conducting plate, and a double-connected heat-conducting plate. The double-connected external heat-dissipating frame evens out the heat from multiple sets of internal conductive cores and transfers it to the outside of the outer sheath, achieving heat dissipation from the inside out. The dissipated heat is used to melt attached ice and snow. Combined with a protective isolation membrane and a drainage channel, rain and snow are guided to achieve icing treatment on the cable surface, preventing excessive icing that could cause the cable to break due to excessive weight. This improves the cable's icing capacity and ensures a constant internal temperature, enhancing the stability of the internal conductive environment. The internal thread correction block and damping buffer are pulled by the clamping linkage bracket and load-bearing cable. The cable's own reciprocating oscillation and the damping buffer absorb energy, and the load-bearing cable provides position restriction, achieving continuous energy absorption, buffering, and limiting counter-impact treatment. This reduces the intensity and amplitude of the cable's reciprocating oscillation, thereby reducing friction between the cable and the connection point and ensuring the stability of the cable connection.

[0017] In summary, by combining multi-level buffer limit components and coupling components, and through heat conduction treatment from the inside out, the amount of ice on the cable surface can be effectively reduced when using the cable in rainy, snowy, or icy weather, thus improving the safety of cable operation. Furthermore, by utilizing multi-stage tension buffer treatment and outside-in counter-buffering treatment, the intensity of external swaying of the cable in light and strong wind environments is reduced, the rate of cable damage and material fatigue is decreased, and the service life and operational stability of the cable are improved. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0019] In the attached diagram: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the multi-level buffer limiting component of the present invention; Figure 3 This is a schematic diagram of the installation structure of the medium-limit thermally conductive insulating tube of the present invention; Figure 4 This is a schematic diagram of the installation structure of the double-connected external guide uniform frame of the present invention; Figure 5 This is a schematic diagram of the mounting structure of the laminated semiconducting sheet of the present invention; Figure 6 This is a schematic diagram of the installation structure of the multi-groove flow guide support strip of the present invention; Figure 7 This is a schematic diagram of the structure of the coupling component of the present invention; Figure 8 This is a schematic diagram of the installation structure of the inner sliding limiting cylinder of the present invention; Figure 9 This is a schematic diagram of the installation structure of the outer sheath of the present invention; Labels in the diagram: 1. Inner conductive core; 2. Multi-level buffer limiting assembly; 201. Middle limit thermally conductive insulating tube; 202. Interlocking buffer sleeve; 203. Outwardly protruding interlocking bracket; 204. Interlocking fixing rod; 205. Adhesive semi-conductive sheet; 206. Pressing treatment sheet; 207. Inner support fixing plate; 208. Outer thermally conductive sheet; 209. Multi-groove flow guiding support strip; 210. Fixed arc guide sheet; 211. Double-protruding pressing strip; 212. Pressure relief limiting plate; 213. Protruding locking plate; 214. Support limiting rib; 215. Double-connected thermally conductive plate; 216. Interlocking fixing hole; 217. Combined connection hole; 218. Double-connected outer uniform guide frame; 219. Bidirectional exchange frame; 220. Inner limit insulating tube; 3. Connecting components; 301. Pressure limiting groove; 302. Double convex ring bracket; 303. Outer sheath; 304. Protective isolation membrane; 305. Metal shielding strip; 306. Pressure relief airbag; 307. Fine-tuning spring plate; 308. Fine-tuning airbag; 309. Pressing linkage bracket; 310. Combination bolt; 311. Combination nut; 312. Inner sliding limiting cylinder; 313. Damping buffer; 314. Internal thread correction block; 315. Load-bearing cable; 316. Middle limit fixing rod; 317. Drainage treatment groove. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example: Figure 1-9 As shown, the present invention provides a technical solution: a high-strength overhead insulated cable that is resistant to wind vibration and icing, including an inner conductive core 1, and a multi-level buffer limiting component 2 is provided on the outside of the inner conductive core 1; The multi-level buffer limiting assembly 2 includes a middle limiting thermally conductive insulating tube 201, a matching buffer sleeve 202, an outwardly protruding interlocking bracket 203, an interlocking fixing rod 204, a bonding semi-conductive sheet 205, a pressing treatment sheet 206, an inner support fixing plate 207, an outer thermally conductive sheet 208, a multi-groove flow guiding support strip 209, a fixed arc guiding sheet 210, a double-protruding pressing strip 211, a pressure-relieving limiting plate 212, a protruding interlocking plate 213, a supporting limiting rib 214, a double-connected thermally conductive plate 215, an interlocking fixing hole 216, a combined connection hole 217, a double-connected outer uniform guide frame 218, a bidirectional exchange frame 219, and an inner limiting insulating tube 220. A middle-limit thermally conductive insulating tube 201 is provided on the outer side of the inner conductive core 1, and several interlocking buffer sleeves 202 are equidistantly bonded to the inner side of the middle-limit thermally conductive insulating tube 201. The inner side of the connecting buffer sleeve 202 is fitted with an outwardly protruding interlocking bracket 203. The cross-section of the outwardly protruding interlocking bracket 203 is U-shaped. Two adjacent outwardly protruding interlocking brackets 203 are interlocked with each other. The outer end of the outwardly protruding interlocking bracket 203 is attached to the inner end of the middle limit thermally conductive insulating tube 201 to achieve alignment and ensure stable operation during buffer pressing and compression restriction. One end of the outwardly protruding interlocking bracket 203 is welded with an insertion fixing rod 204. A bonding semiconducting sheet 205 is laid on the outer side of the inner conductive core 1, and a pressing treatment sheet 206 is installed on the outer end of the bonding semiconducting sheet 205. An inner support fixing plate 207 is inserted and installed inside the pressing and processing plate 206, and an outer heat-conducting plate 208 is laid on the outer end of the pressing and processing plate 206. A multi-groove flow guide support strip 209 is bonded to the outer end of the outer heat conduction sheet 208. A fixed arc guide plate 210 is symmetrically inserted and installed on the inner side of the multi-groove flow guide support strip 209. The longitudinal section of the fixed arc guide plate 210 is arc-shaped to ensure the stability of the alignment guidance and shape restriction. The side end of the multi-groove flow guide support strip 209 is snapped with a double convex pressure strip 211. One inner end of the double convex pressure strip 211 slides and fits against the outer end of the outer heat conduction sheet 208. The longitudinal section of the double convex pressure strip 211 and the convex positioning plate 213 are both cross-shaped to achieve alignment and guidance. The outer side of the double convex pressure strip 211 is snapped with a pressure relief plate 212. A convex locking plate 213 is bonded to the outer end of the pressure relief plate 212, and a support and restriction rib 214 is embedded at equal intervals on the inner side of the convex locking plate 213. A double-connected heat-conducting plate 215 is snapped between two adjacent convex locking plates 213. The longitudinal section of the double-connected heat-conducting plate 215 is I-shaped to ensure stable locking with the convex locking plates 213. One end of the outward convex interlocking locking bracket 203 is provided with an insertion fixing hole 216. A combination connection hole 217 is provided at one end of the pressing and processing piece 206, corresponding to the position of the inner support fixing plate 207; A double-connected external uniform frame 218 is installed on the outer end of the middle-limit thermally conductive insulating tube 201. A bidirectional exchange frame 219 is installed on the outer end of the middle-limit thermally conductive insulating tube 201 at the position corresponding to the double-connected external uniform frame 218. One end of the double-connected external uniform frame 218 is attached to one end of the bidirectional exchange frame 219. The inner end of the bidirectional exchange frame 219 is attached to the outer end of the middle-limit thermally conductive insulating tube 201. The inner end of the double-connected external uniform frame 218 is attached to the outer end of the middle-limit thermally conductive insulating tube 201, thereby realizing the bonding heat conduction and heat transfer circulation treatment. An inner limiting insulating tube 220 is installed on the outer end of the bidirectional exchange rack 219.

[0022] The inner limiting insulating tube 220 is provided with a connecting assembly 3 on its side end; The assembly 3 includes a constant pressure limiting groove 301, a double convex ring bracket 302, an outer sheath tube 303, a protective isolation membrane 304, a metal shielding strip 305, a pressure relief airbag 306, a fine-tuning spring plate 307, a fine-tuning airbag 308, a clamping linkage bracket 309, a combination bolt 310, a combination nut 311, an inner sliding limiting cylinder 312, a damping buffer 313, an internal thread correction block 314, a load-bearing cable 315, a middle limit fixing rod 316, and a drainage treatment groove 317. A number of constant pressure limiting grooves 301 are equally spaced on the outer side of the inner limiting insulating tube 220, and a double convex ring bracket 302 is inserted and installed inside the constant pressure limiting groove 301. The outer end of the double-convex ring bracket 302 is fitted with an outer sheath tube 303, and the outer end of the outer sheath tube 303 is provided with several drainage treatment grooves 317 at equal intervals. Several protective isolation films 304 are equidistantly bonded to the outer end of the outer sheath tube 303, and metal shielding strips 305 are equidistantly wrapped around the inner side of the inner limiting insulating tube 220. Several pressure-reducing airbags 306 are laid on the inner side of the metal shielding strip 305. The inner end of the pressure-reducing airbag 306 is attached to the outer end of the double-connected outer conductor uniform frame 218, and the inner end of the pressure-reducing airbag 306 is attached to the outer end of the bidirectional exchange frame 219 to achieve buffering treatment. Through micro-elastic correction, the occurrence of low-intensity wind vibration of the cable is reduced. Several fine-adjusting spring plates 307 are laid at equal intervals on the inner side of the pressure-reducing airbag 306. A fine-tuning airbag 308 is bonded between the double-connected external guide uniform frame 218 and the bidirectional exchange frame 219. A pressing linkage bracket 309 is sleeved on the side of the protective isolation membrane 304. The two pressing linkage brackets 309 are attached to each other. A combination nut 311 is inserted and installed on one end of the inner side of the pressing linkage bracket 309 to achieve alignment connection restriction. Two clamping linkage brackets 309 are inserted and installed with combination bolts 310 at one end, and combination nuts 311 are threadedly connected to one end of the combination bolts 310. Several inner sliding limit cylinders 312 are equidistantly engaged on the side end of the clamping linkage bracket 309, and a damping buffer 313 is engaged on the inner side of the inner sliding limit cylinder 312. One end of the damping buffer 313 is snapped with an internal thread correction block 314. The internal thread correction block 314 is slidably installed inside the inner sliding limit cylinder 312 to achieve sliding limitation and fine adjustment. One end of the internal thread correction block 314 is connected to a load-bearing cable 315 by a thread. A middle limit fixing rod 316 is installed between multiple double-connected outer guide uniform frame 218 and bidirectional exchange frame 219. The middle limit fixing rod 316 is placed inside the outer sheath tube 303 to ensure the stability of the middle load-bearing limit.

[0023] The working principle and usage process of this invention are as follows: During cable laying, workers use external traction equipment to pull the cable to the overhead position and install the cable at the overhead position through connecting components. After the overhead position is completed, depending on the environment, when the wind is strong and there are many gusts, workers place multiple clamping linkage brackets 309 one by one at the position of the protective isolation membrane 304 outside the outer sheath 303, and use combination nuts 311 and combination bolts 310 to clamp and fix two clamping linkage brackets 309, and fix two sets of clamping linkage brackets 309 at the two ends of the installation. After the fixing is completed, the internal thread correction block 314 and the load-bearing cable 315 are connected by threads to realize the combination connection of the internal thread correction blocks 314 at the positions of the two sets of clamping linkage brackets 309. When the cable is in use, power is transmitted through multiple sets of inner conductive cores 1. During operation, the inner conductive cores 1 generate heat due to their own resistance. This heat is gradually dissipated outwards along the bonding semi-conductive sheet 205 and the pressure-adjusting sheet 206. The heat is then transferred along the pressure-adjusting sheet 206, the outer heat-conducting sheet 208, the multi-groove flow-guiding support strip 209, the double-convex pressure-adjusting strip 211, the pressure-reducing limiting plate 212, and the double-connection heat-conducting plate 215 to the outer convex insertion bracket 203. It is then discharged in conjunction with the middle-limit heat-conducting insulating tube 201, the double-connection outer heat-conducting uniform bracket 218, and the bidirectional exchange bracket 219. The double-connected outer conductor uniform frame 218 uniformly distributes the heat from multiple sets of inner conductive cores 1, thereby uniformly discharging the heat from the inner conductive cores 1 to the outside. The heat gradually diffuses from the inside to the outside and is transferred to the outside of the outer sheath tube 303 through the pressure relief airbag 306, metal shielding strip 305, inner limiting insulation tube 220 and double convex ring clamp 302. This transfers the internal heat to the outside of the cable and avoids excessive temperature difference between the inside and outside of the cable by absorbing and dispersing it layer by layer. It also cools the inner conductive cores 1 inside the cable to prevent high temperature from affecting the power transmission efficiency of the inner conductive cores 1. By discharging heat layer by layer outwards, the protective isolation membrane 304 on the outside of the outer sheath 303 and the drainage treatment groove 317 guide rain and snow, and use the discharged heat to melt snow and ice, reducing the amount of ice accumulation. This reduces the possibility of the cable bending and breaking due to increased self-weight caused by ice accumulation. When the cable is affected by external wind, when the airflow reaches the position of the outer sheath 303, the airflow comes into contact with the drainage treatment groove 317 and the outside of the outer sheath 303. The irregular drainage treatment groove 317 and the near-circular outside of the outer sheath 303 guide the airflow. When the airflow flows along the drainage treatment groove 317, it will generate turbulence flowing to both sides. The turbulence comes into contact with the airflow that subsequently flows to the position of the outer sheath 303. At this time, the airflow and the turbulence collide and slow down the airflow speed. At this time, the cable will still swing slightly. When the cable swings, the cable drives the external clamping linkage bracket 309 and the load-bearing cable 315 to swing synchronously. At this time, the clamping linkage bracket 309, which is fixed at both ends at the connection point, is pulled by the force to pull the first section of the load-bearing cable 315. Under the action of wind force and swing, the load-bearing cable 315 drives the internal thread correction block 314 to slide along the inner sliding limit cylinder 312. At this time, the damping buffer 313 absorbs energy and limits the internal thread correction block 314. Then, the cable resets under its own weight. At this time, the damping buffer 313 resets synchronously and releases the absorbed energy. By using energy absorption buffering and limit counteracting, the intensity of the cable's reciprocating swing is reduced and the amplitude of the cable swing is reduced. During the cable swinging process, the internal pressure-reducing airbags 306 and 308 are heated by the heat discharged from inside. The pressure-reducing airbags 306 and 308 expand and compress and restrict the double-connected outer conductor uniform frame 218, bidirectional exchange frame 219, middle limit thermal conductive insulation tube 201, and inner limit insulation tube 220. At the same time, the convex interlocking locking frame 203 located inside the middle limit thermal conductive insulation tube 201 is pulled by the external swinging force and swings back and forth along the mating buffer sleeve 202, generating a small-amplitude rotation. The convex interlocking locking frame 203 drives the interlocking locking mechanism. Plate 213, support limiting rib 214 and pressure relief limiting plate 212 move along the double convex pressure bar 211, and push the double convex pressure bar 211 to drive the fixed arc guide plate 210 to squeeze and restrict the multi-groove flow guiding support bar 209. The fixed arc guide plate 210 restricts the shape of the multi-groove flow guiding support bar 209 and performs elastic fine adjustment with the multi-groove flow guiding support bar 209. By using internal rotation processing and external swing counter processing, the cable can avoid fixed frequency oscillation when subjected to continuous wind vibration, reducing material aging and fatigue damage. The inner conductive core 1 is pressed and positioned by the pressing treatment plate 206 and the inner support fixing plate 207. The middle part is isolated, limited and supported by the external multi-segment anti-convex positioning plate 213, the support limiting rib 214 and the double-connected heat-conducting plate 215. The outer side is pressed and limited by the external multi-segment pressure-relieving airbag 306, the fine-tuning airbag 308, the double-connected outer conductor uniform frame 218 and the bidirectional exchange frame 219 to achieve alignment and locking. Through the three-part segmented pressing treatment, the cable is steadily supported and locked at different positions. The external double convex ring clamp 302 provides external locking support to ensure the support stability and tensile strength of the cable. This allows the cable to bear weight steadily when covered with ice, avoiding damage to internal components due to excessive bending.

[0024] During operation, the present invention uses the multi-level buffer limit group 2 to initially absorb energy and constrain the displacement of the load-bearing cable 315. The multi-level buffer limit is achieved by the cooperation between the matching buffer sleeve 202, the outward protruding interlocking bracket 203, the pressure treatment plate 206 and the pressure relief limiting plate 212. Simultaneously, combined with the heat exchange structure, the external heat-conducting plate 208, the double-connected heat-conducting plate 215 and the bidirectional exchange frame 219 are used to conduct heat and melt the external icy environment. In conjunction with the external airflow guiding structure, the multi-groove flow guide support bar 209 and the fixed arc guide plate 210 are used to disturb and adjust the airflow around the load-bearing cable 315, thereby constructing a multi-field synergistic system of heat, force and air as a whole. In this system, the vibration state, airflow distribution state, and temperature change state of the load-bearing cable 315 interact and are dynamically coupled, enabling vibration reduction, icing suppression, and structural stability improvement to be achieved simultaneously. Through the coordinated operation of the above-mentioned structures, and combined with the synergistic effect of the decompression airbag 306, the fine-tuning spring plate 307, and the damping buffer 313 in the connecting assembly 3, not only is the adaptability to the operating state of the load-bearing cable 315 under complex working conditions improved, but the stability and safety of the overall system are also effectively enhanced, demonstrating good engineering application value.

[0025] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-strength overhead insulated cable resistant to wind vibration and icing, comprising an inner conductive core (1), characterized in that: The inner conductive core (1) is provided with a multi-level buffer limiting component (2) on its outer side; The multi-level buffer limiting assembly (2) includes a middle limit thermally conductive insulating tube (201); The inner conductive core (1) is provided with a middle-limit thermally conductive insulating tube (201) on the outside, and a number of interlocking buffer sleeves (202) are equidistantly bonded to the inner side of the middle-limit thermally conductive insulating tube (201). The inner side of the connecting buffer sleeve (202) is fitted with an outwardly protruding interlocking bracket (203), and one end of the outwardly protruding interlocking bracket (203) is welded with an interlocking fixing rod (204). The inner conductive core (1) is covered with a bonding semiconducting sheet (205), and a pressing treatment sheet (206) is installed on the outer end of the bonding semiconducting sheet (205). An inner support fixing plate (207) is inserted and installed inside the pressing and processing plate (206), and an outer heat-conducting plate (208) is laid on the outer end of the pressing and processing plate (206). The outer end of the outer heat-conducting sheet (208) is bonded with a multi-groove flow-guiding support strip (209), and a fixed arc guide plate (210) is symmetrically inserted and installed on the inner side of the multi-groove flow-guiding support strip (209). The side end of the multi-groove flow guide support bar (209) is snapped with a double convex pressure bar (211), and the outer side of the double convex pressure bar (211) is snapped with a pressure relief limiting plate (212).

2. The high-strength overhead insulated cable resistant to wind vibration and icing as described in claim 1, characterized in that, The outer end of the pressure relief plate (212) is bonded with a convex locking plate (213), and the inner side of the convex locking plate (213) is equidistantly embedded with supporting and limiting ribs (214). A double-connected heat-conducting plate (215) is snapped between two adjacent convex locking plates (213), and a card fixing hole (216) is opened at one end of the outward convex interlocking locking frame (203). The cross-section of the protruding interlocking bracket (203) is U-shaped, and two adjacent protruding interlocking brackets (203) are interlocked and connected.

3. The high-strength overhead insulated cable resistant to wind vibration and icing as described in claim 1, characterized in that, The pressing and processing piece (206) has a combined connection hole (217) at one end corresponding to the position of the inner support fixing plate (207); A double-connected external conductor uniform frame (218) is installed on the outer end of the middle-limited thermally conductive insulating tube (201), and a bidirectional exchange frame (219) is installed on the outer end of the middle-limited thermally conductive insulating tube (201) at the position corresponding to the double-connected external conductor uniform frame (218). An inner limiting insulating tube (220) is installed on the outer end of the bidirectional exchange rack (219). The outer end of the protruding interlocking bracket (203) is attached to the inner end of the middle limit thermally conductive insulating tube (201), and the longitudinal section of the fixed arc guide plate (210) is arc-shaped.

4. A high-strength overhead insulated cable resistant to wind vibration and icing as described in claim 1, characterized in that, One end of the inner side of the double convex pressing strip (211) is slidably attached to the outer side of the outer heat-conducting sheet (208), and the longitudinal section of the double convex pressing strip (211) and the convex positioning plate (213) are both cross-shaped.

5. A high-strength overhead insulated cable resistant to wind vibration and icing according to claim 2, characterized in that, The longitudinal section of the double-connected heat-conducting plate (215) is I-shaped, and one end of the double-connected external heat-conducting uniform frame (218) is attached to one end of the bidirectional exchange frame (219).

6. A high-strength overhead insulated cable resistant to wind vibration and icing according to claim 3, characterized in that, The inner end of the bidirectional exchange frame (219) is attached to the outer end of the middle-limit thermally conductive insulating tube (201), and the inner end of the double-connected outer conductor uniform frame (218) is attached to the outer end of the middle-limit thermally conductive insulating tube (201).

7. A high-strength overhead insulated cable resistant to wind vibration and icing according to claim 3, characterized in that, The inner limiting insulating tube (220) is provided with a coupling assembly (3) on its side end; The coupling assembly (3) includes a constant pressure limiting groove (301); The inner limiting insulating tube (220) has several constant pressure limiting grooves (301) evenly spaced on the outer side, and a double convex ring bracket (302) is inserted and installed inside the constant pressure limiting groove (301). The outer end of the double convex ring bracket (302) is sleeved with an outer sheath (303), and the outer end of the outer sheath (303) is provided with a plurality of drainage treatment grooves (317) at equal intervals. The outer sheath (303) has several protective isolation films (304) bonded at equal intervals on its outer end, and the inner insulating tube (220) has metal shielding strips (305) wound at equal intervals on its inner side. The inner side of the metal shielding strip (305) is provided with several pressure-reducing airbags (306), and the inner side of the pressure-reducing airbags (306) is provided with several fine-adjusting spring plates (307) at equal intervals. A fine-tuning airbag (308) is bonded between the double-connected external guide uniform frame (218) and the bidirectional exchange frame (219), and a pressing linkage bracket (309) is sleeved on the side end of the protective isolation membrane (304). One end of each of the two clamping linkage brackets (309) is fitted with a combination bolt (310), and one end of the combination bolt (310) is connected to a combination nut (311) by a thread. The side end of the clamping linkage bracket (309) is equidistantly fitted with several inner sliding limit cylinders (312), and the inner side of the inner sliding limit cylinder (312) is fitted with a damping buffer (313).

8. A high-strength overhead insulated cable resistant to wind vibration and icing according to claim 7, characterized in that, One end of the damping buffer (313) is snapped with an internal thread correction block (314), and one end of the internal thread correction block (314) is connected to a load-bearing cable (315) via a thread. A middle limit fixing rod (316) is installed between multiple double-connected external guide uniform frames (218) and bidirectional exchange frames (219). The inner end of the depressurization airbag (306) is attached to the outer end of the double-connected outer guide uniform frame (218), and the inner end of the depressurization airbag (306) is attached to the outer end of the bidirectional exchange frame (219).

9. A high-strength overhead insulated cable resistant to wind vibration and icing according to claim 7, characterized in that, The two clamping linkage brackets (309) are fitted together at their sides, and the combination nut (311) is inserted and installed at one end of the inner side of the clamping linkage bracket (309).

10. A high-strength overhead insulated cable resistant to wind vibration and icing according to claim 8, characterized in that, The internal thread correction block (314) is slidably installed inside the inner sliding limit cylinder (312), and the middle limit fixing rod (316) is placed inside the outer sheath tube (303).

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